Air-cushion hub



av. LOUTZKOY. AIR CUSHION HUB. APPLICATION FILED MAY 12, I920.

Patented Aug. 22, R922.

2 SHEETS SHEET I.

B. V. LOUTZKOY. AIR CUSHION HUB. APPLhCATlON FILED MA Y I2, I920. v

Patented'Aug. 22, 1922.

2 SHEETS-SHEET 2.

BORIS v. nourzxox, ornnnnnnwrrannssra.

AIR-CUSHION HUBQ,

T 0 all whom it may concern:

Be it known that I, BORIS VON LOUTZKOY, Diplom-Engineer, a subject ofRussia, and residing at Andreewka, Gouvernement Taurien, Russia, haveinvented certain new an useful Improvements in Air-Cushion Hubs, ofwhich the following is a specification.

The present invention relates to resilient wheels of the pneumatic typewherein cylinders and pistons are used with pivoted links connectingeither the cylinders or the pistons to the rim or the hub of the wheelto permit of the desired eccentric movement of the rim relatively to thehub.

An object of the present invention is to provide means for limiting theswinging movements of the-links to prevent the same from moving into adead center or locking position and to strengthen the wheel structureand prevent damage thereto or move ments beyond the range of efficiency.

Another object of the invention is to provide guiding or stopping meansof this character which permits the free operation of the links withinthe desired limits and which securely hold the links after their motionhas been arrested. I

The above and various other objects and advantages of this inventionwill be in part, described in, and in part understood from, thefollowing detailed description of the present preferred embodiment, thesame being illustrated in the accompanying drawings, wherein- Fig. 1 isa diagrammatic view of a wheel constructed according to this inventionand having the stops and guides applied thereto, the parts of the wheelbeing shown in position when the wheel is in use;

Fig. 2 is a similar view showing the positions of the parts when thewheel has been at rest for a considerable length of time; and

Fig. 3 is a fragmentary section through a wheel taken in the planethereof and showing parts in section, and illustrating the improvementsof this invention applied thereto.

Fig. 4 is a transverse section through the casing at one of thecylinders, showing the connections and stops.

Referring to the drawing, m designates a hub about which is arranged arim member or casing n. This casing n is made up of a relatively broadring 8 and lateral annular plates 75 extending inwardly opposite edgesof the ring 8. The casing a Specificatibn of Letters Patent.

from the Patented Aug. 22', 11922.

1920. Serialll'o. 380,946;

may form the outer portion of the hub and be connected by spokes or thelike to an outer rim. The hub m carries a plurality of radiallyextending pistons a over which are fitted a corresponding number ofcylinders b. The cylinders Z) are provided with pins 0 at opposite sidesupon which are pivoted links 0.

The free ends of the: links are mounted on pins 19 which projectinwardly from the sides of the casing a for supporting the casing or rimupon the cylinders Z). The rim a is adapted to move relatively to thehub m into difierent eccentric positions and the links 0 are adapted toswing through various arcs to follow their pivots p.

When submitted to abnormal shocks or load there is a tendency for thelinks 0 to swing through a reater arcthan is defined by an obtuse ang erelatively to its normal position and consequently there is liability ofthe links at opposite sides of the hub becoming locked or passing on todead center.

To obviate this excess swinging of the links, stops 7 are provided andare preferably in the form of shoulders or hooks rolled over on theopposite ends of guides cl. The guides (Z may be in the form of metallicplates curved on an arc struck from the fixed pivot 0 of the adjacentlink to follow the path of the movable pivot 32. The plates d may besecured to the opposite sides of the cylinders 5 toward the inner endsthereof and project laterally from the cylinders to receive therein thepivots p which extend from the rim or casing a.

It is apparent that when the link a swings in either direction to thelimit of its movement, the pin or end of the link strikes the adjacentshoulder j and is stopped from further swinging and is held by the hookrigidly in place.

That is claimed is:

1. In a pneumatic cushioned wheel, the combination of a hub, a rimmember, a plurality of pistons extending radially from the hub,cylinders fitting on the outer ends of the pistons, and links connectingthe cylinders to the rim member, guides for the links, said guides beingcarried by the cylinders and adapted to embrace the ends of the linksthat are connected to the rim member, the guides having stops atopposite ends to limit the swinging of the links in opposite directionsabout their pivots in the cylinders.

adapted to engage the link and limit the swinging thereof in oppositedirections. 10

In testimony whereof I aiiix my signature in presence of two Witnesses.

BORIS v. LOUTZKOY.

Witnesses:

PAUL GoRN, A. SONHIELL. p

